qt: add enable for truetype font installation
Currently, qt.mk installs DejaVu/Vera TrueType fonts when Qt is configured for
freetype support. However, some users may prefer to limit the installed fonts
to only Qt's prerendered fonts (micro, fixed, helvetica, etc.). Or, there may
be a preference to use seperately installed TrueType fonts. This commit adds
a switch to explicitly control the installation of the TrueType fonts, similar
to the existing prerendered font enables.
Signed-off-by: Danomi Manchego <danomimanchego123@gmail.com>
Reviewed-by: Peter Seiderer <ps.report@gmx.net>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>